Question

angles 1 and 2 are an example of same side exterior angles a linear pair same side interior angles alternate corresponding angles

Explanation:

Angles 1 and 2 share a common - side and a common vertex, and their non - common sides form a straight line. By definition, a linear pair of angles are adjacent angles that are supplementary (sum to 180 degrees) and share a common side and vertex with non - common sides that are opposite rays.

Answer:

a linear pair